Blower.



PATENTED SEPT. 15, 1903.

F. F. WILSON.

BLOWER.

APPLICATION FILED MAR. 6, 1903.

4 SHEETS-SHEET 1.

N0 MODEL.

PATBNTBD SEPT. 15, 1903.

I'. F. WILSON.

BLOWER.

APPLIOATION FILED MAR. e, 1903.

4 sHEBTs-sHEET a. l

NO MODEL.

,76am 33M @awk/oft No. 738,868. l y PATENTBD SEPT. 15,1903.

F. P.. WILSON.

BLOWER.

APPLICATION FILED MAR. 6, 1903.

NO MODEL. 4 SHEETS-SHEET 4.

UNITED STATES Patented September 15, 1903.

`PATENT OEEICE.

FERGUS F. WILSON, OF BROOKLYN, NEW YORK, ASSIGNOR TO ALBERT J. KELTING,OF BROOKLYN, NEW YORK.

BLOWER.

SPECIFICATION forming part of Letters Patent No. 738,868, datedSeptember 15, 1903.

Application led March 6, 1903.

To a/ZZ whom it may concern:

Be it known that I, FERGUS F. VILSON, of the borough of Brooklyn, countyof Kings,city and State of New York, have invented certain new anduseful Improvements in Blowers, of which the following is aspecification, accompanied by drawings.

This invention relates to blowers, but more particularly to that classknown as positivepressure blowers, in which there is a rotating pistonand rotary Wings or blades actuated thereby and constructed to oscillateat the same time in the direction of the axis of rotation. v v

The objects of the invention are to improve upon the construction ofsuch blowers and increase their efficiency, while rendering the partsless liable to get out of order than heretofore.

Another object of the invention is to improve upon the bearings of therotating and oscillating wings or blades, whereby wear may be readilytaken up and provision afforded for adjusting the parts automatically.

Further objects of the invention will hereinafter appear, and to theseends the invention consists of apparatus and devices for carrying outthe above objects, embodying the features of construction, combinationsof elements, and arrangement of parts, having the general mode ofoperation substantially as hereinafter fully described and claimed inthis specification and shown in the accompa- Vnying drawings, in which-Figure l is a central sectional elevation taken in the plane of theshaft of apparatus embodying the invention. Fig. 2 is a horizontalsectional view of the apparatus in the plane of the shaft. Fig. S is acentral sectional elevation of the blower transversely of the shaft.Fig. 4c is a perspective view of one of the bearing-blocks for theblades. Fig. 5 is a detail side view of a portion of the vapparatus,showing onelof the blades in operative positionv in its bearing-block.Fig. 6 is a detail view showing the rear of one of the blades and itsbearing.

Referring to the drawings, the wedgeshaped frame or rim A is providedwith the Serial No. 146,531. (No model.)

covers vB, suitably secured thereto, as by 5a means of the bolts-O,while legs D are formed upon the frame. Vithin the framework thus formeda piston E is adapted to be rotated, and in the class of blowersreferred to the piston is formed with conical surfaces F.

The blower may be constructed either single or double, in this instancea double blower being shown, and the piston E comprises two halves orsections suitably secured together, as by means of the screws G, but oneof which screws is shown in dotted lines in Fig. l to illustrate theconstruction. The double conical piston E is provided with slots in itssides at substantially right angles to each other, in which the wings orblades H are adapted to oscillate as they rotate with the rotatingpiston.

The covers B are bored, as shown, at an angle to afford bearings for thehorizontallyextending hubs I of the piston, which hubs, as shown, areinwardly screw-threaded to receive the screw-threaded ends of the shaftJ. Any suitable means may be pro vided for i111- parting rotation to theshaft .I to operate the apparatus. If desired, pins K may be utilized tosecure the shafts iirmly within the` hubs I. Bearing-boxes L aresuitably secured to the covers B, as by means ofthe screws O, andadjusting-screws P afford provision for compensating for wear in theboxes.

According to the construction of frame and piston' described it will beseen that compression-ways Q are afforded at each side of the piston inthe lower portion of the appa* ratus, while communication between thesaid compression-ways is cut off at the abutment R, which is aifordedbetween the upper portions of the piston and covers. In the operation ofthe apparatus the wings swing outwardly into the compression-ways duringrotation and retire within the slots in the piston at the upper portionof the apparatus. The frame A is provided with a.cylindrical portion Sfor the periphery of the piston,while the outer curved edges of the wings are adapted to the curved portions T of the frame A. There is aclearance-space U at each side of the apparatus, with which inlet andoutlet passages V V and W W communicate. YAn

abutment X, as shown, separates the clearance-spaces U. It will be seenthat air entering the compression Ways one side or the other, accordingto the direction of rotation of the piston, will be forced out the otherside by the wings, which oscillate on their pivots, as stated, to swingout into the compression-ways at one side of the axis of the piston, totake effect on the air and retire at the other side of said axis inorder to sweep past the abutments aorded by the covers of the casing.

According to the invention improved bearings are afforded for the bladesor wings of the blower. As shown, the hubs I of the piston are hollow,and inwardly-extendings webs Y afford cylindrical supports for thebearing-blocksZ of the blades. According to the invention the blades IIare permitted to oscillate freely upon their trunnions l, which areafforded bearings in the recessed or U.- shaped portions 2 of thebearing-blocks. The bearing-blocks are also slotted at 3, at rightangles to the slots or forks 2, to afford provision for the oscillationor vibration of the blade in the bearing-block. In assembling' the partsof the apparatus the trunnions l of a blade are first placed l withinthe bearing-slots 2 and then the bearing-block is thrust within thecylindrical socket afforded by the web Y of one-half of the piston, asshown. In. order to prevent wear of the edges 4 of the blades againstthe inside of the covers, revoluble rings 5 are secured'within thecircular grooves 6 in the inside faces of the covers, while projections7 on the blades fit notches S in these rings 5.

The inside edges 4 of the blades may be covered with felt or othersuitable substance to bear upon the inside faces of the covers. Wearbetween the blades and the covers is taken up by the pressure of thespring l0, which, as shown, is arranged between the ends of-thebearing-blocks and tends to force each bearing-block outwardly.

According to this improved construction strong and efficient bearingsare afforded for the rotating or oscillating or vibrating blades. Wearis automatically taken up and the parts are not liable to get out oforder or become broken. Proper adjustment of the parts is alwaysmaintained, for as wear occurs the bearing-blocks Z are pushed fartherwi thin `the sockets or supports Y to compensate therefor. The apparatusmaybe operated at high speeds without derangement of the parts, and

, all of the parts of thesconstruction are interchangeable.

According to the invention it will be seen that the wings are adapted tobe oscillated about axes transverse to theaxis of rotation, and thebearing-blocks are carried by the piston and are movable in thedirection of the axis ofthe piston. The wings are pivotally tic meansare provided for pressing sai d blocks into their seats. -f Eachbearing-block is provided with a slot, which is adapted to register withthe slots in the piston, and the bearingrecesses in the bearingblocksfor the trunnions of the wings are arranged, as shown, transversely tothe slots in the blocks. The wings, it will be seen, are adapted tooscillate in the slots in the piston and in the bearing-blocks.

My improved construction affords an equal distribution of the strain orpressure upon all of the bearings, giving to each bearing an equalamount of wearing and also an equal amount of duty. Clogging or breakageof any of the moving parts is also prevented should any foreign materialent-er the mechanism.

Obviously some features of this invention may be used without others,and the invention may be embodied in widely-varying forms.

Therefore without limiting the invention to the construction shown anddescribed nor enumerating equivalents, I claim, and desire to obtain byLetters Patent, the following:

l. In a pressure-blower, the combination with the casing and rotaryconical piston, of wings rotating with the piston and adapted to beoscillated about an axis transverse to the axis of rotation,bearing-blocks carried by the piston and movable longitudinally of theaxis of rotation, said wings being pivotally supported upon .thebearing-blocks, and a spring compressed between the inner ends of saidblocks and tending to force them outwardly, for substantially thepurposes set forth.

2. In a pressure-blower, the combination with the casing and rotaryconical piston provided with a slot, of a bearing-block carried by thepiston and provided with a'slot adapted to register with the slot in thepiston, said block also being recessed at one end transversely to theslot therein, wings provided with trunnions pivotally supported in thetransverse recesses in the end of the block,

the wings being adapted to oscillate in the slots in the piston andbearing-block, and elastic means for pressing said bearing-block intoits seat to take up wear, for substantially the purposes set forth.

3. In a pressure-blower, the combination with the casing and rotaryconical piston provided with a slot, of a solid bearing-block carried bythe piston and provided with a slot adapted to register with the slot inthe piston,

IOO

the tongues formed by the slot in said block being recessed at theirouter ends transversely to the said slot, wings providedwith trunnionsconnected thereto and pivotally supported in the transverse recesses inthe ends of said tongues, the Wings being adapted to oscillate vin theslots in the piston and l bearing-block, and elastic means arranged toexert direct pressure upon the rear portion of name to thisspecification in the presence of said hearing-block for forcing theblock into tWo subscribing Witnesses.

`its seat to take up Wear thereby a'i'ordino y substantially equaldistrbution of strain o FERGUS F' XVILSON' 5 pressure upon the truuuousof the Wings, for ,Vt11esses:

RINALDO A. FRENCH,

substantially the purposes set forth.

In testimony whereof I have signed my WILLIAM H. SOUTHARD.

